godfrey



(No Mode1,)

C. GODPRBY.

APPARATUS TOR-UTILIZING WASTE HEAT 0T KILNS 1N GBNBRATTNG STEAM.

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Barnum Oriucn.

APPARATUS FOR UTILIZING WASTE HEAT F KILNS IN GENERATING STEAM.

SPECIEICATION forming part of Letters Patent No. 297,381, dated April22, 1884.

Application filed August 6, 1883. (No model.)

To all whom, it may concern:

Be it known that I, CORNELIUS GODFREY, of East Williston, in the countyof Queens and State of New York, have invented a new and usefulImprovement in Apparatus for Utilizing Waste Heat of Kilns in GeneratingSteam; and I hereby declaretheiollowing to bea full, clear. and exactdescriptionthereof, reference beinghad totheaccompanying drawings,whichIoform a part of this specification.

The objects of this invention are to provide improved means forutilizing the waste heat from kilns of various kinds for the purpose ofgenerating steam to drive machinery, or

I5 for other purposes for Mwhich steam may be required, and to constructan apparatus of convenient and inexpensive form whereby such heat may beutilized for said purposes.

The primary design of my invention is to 2o generate steam for driving,crushing, and grinding machineryin cement-works by means of the wasteheat from the kiln or kilns in which the stone is burned; but it isequally applicable to any structures of a similar kind in which heatgoes to waste.

The invention consists in the combination, in an apparatus for utilizingthe waste heat of cement-kilns and similar structu/res, of a tubularsteam-generator placed immediately over 3o the kiln, an upright pipepassing through the center of the kiln and communicating with the saidgenerator,and appliances for taking steam from said generator, andappliances for supplying water to said upright pipe, all as hereinafterparticularly described; and it further consists in the novelconstructions and combinations of parts, as hereinafter set forth.

In the accompanying drawings I have shown 'an apparatus ot' simple,convenient, and inex- 40 pensive construction, whereby my said inventionmay be carried into practice.

In the said drawings, Figure l represents a plan view; Fig. 2, avertical section on the line .r x; Fig. 3, a vertical section on theline 1/y; Fig. 4, a top view of the iiregrate, and Fig. 5, a horizontalsection on the line z z in Fig. 3.

Similar letters of reference indicate the same parts in all the severalfigures.

A represents the body of the kiln in which the stone or other substanceto be treated with heat is placed. The outer case, c, is of sheet metal,and a lining, b, of tire-brick or other refractory material, is placedinside of the same.

c c are openings or doors through which the coal or other fuel issupplied when charging the kiln.

D is the base upon which the body A issupported, and which may be ofmetal or other suitable material. It is open at one side, as at d, toadmit air, and is provided with an inclined plate or chute, e, uponwhich the contents of the kiln are received when the latter' isdischarged. An annular plate, f, provided with uprighttlangesg, istitted over the top of the` base D, and another annular plate, h, restsupon said flanges and forms the foundation or support of the body A oi"the kiln.

The steanrgeneiator consists of an upright tube or pipe, B. which passesupward through the centers of the base D and body A of the kiln, and atubular receptacle, O, which is connected with the upper end of B. Thisreceptacle O is somewhat smaller in diameter than the interior ofthekiln, and the upper portion of the same forms the steam-chamber. Anumber of pipes or ilues, fi, open at both ends, pass through the saidreceptacle O,their upper ends connecting with a conical chamber, E,whichv forms the base of the chimney F, and their lower ends connectinga chamber, G, directly over the top ofthe body A of the kiln. Thesepipes i may either be arranged in a circular row, as shown in Fig. 5, ordistributed in straight rows, if preferred, their object and purposebeing to conduct the heat and smoke through the receptacle C. Thechamber G is formed by means of a sheetmetal jacket or hood, k, in theform of a frustum of a cone, the lower edge of which rests upon the topof the body A, and the upper edge of which tits snugly around theexterior surface of C, and said jacket k is provided with ears ZZ, towhich are attached ropes or chains m m, (operated by any suitablepower,) by which the said jacket may be lifted to the position shown bythe dotted lines in Fig. 2, when the kiln is to be charged. n and n'represent the fire-grate, which is made in two sections, as shown, andprovided with a central openingto allow the pipe B to pass through it,and with ears o o, by which it may be withdrawn, one section at a time,when the kiln is IOO to be discharged. This grate is made to fit inbetween the plates f and h and flanges g g.

His a supply-pipe for supplying water to the generator, provided with asuitable 'valve or cock,p` for regulating the supply; and Iis asteam-discharge pipe for taking the steam from the generator, providedwith a suitable valve, r.

The arrows in the drawings indicate the direction of the draft.

By means of these constructions a convenient and effective apparatus orstructure for the purpose above mentioned can be erected at acomparatively small expense; and I may state that while the waste heatis utilized the action of the kiln itself is improved, as the apparatushas a tendency to equalize the heat throughout the entire mass of stoneor other material subjected to the action of heat in the same` by reasonof the pipe B abstracting a small proportion of the heat from the centerof the mass, where under ordinary circumstances it is much higher indegree than at the outer portions, and consequently a. more uniform burnis obtained.

I am aware that asteam-generator has heretofore been used in connectionwith a kiln for utilizing the waste heat of the latter to produce steam,and I do not broadly claim as my invention an apparatus for utilizingthe Waste heat of a kiln for that purpose.

What I claim as my invention is- 1. In an apparatus for'utilizing thewaste heat of cement-kilns and similar structures to generate steam, thecombination of the tubular boiler or steamgenerator C, the upright pipeB, passing through the center of the kiln, and connecting with saidgenerator C, and appliances, as described, for taking steam from saidgenerator and for supplying water to said pipe B, as and for thepurposes set forth.

2. The combination, with a cement-kiln or similar structure, A, of thesteam-generator B C, consisting of the central tube, B, and tubularreceptacle C, the water-supply pipe H, and the steam-discharge pipe I,and arranged in relation to said kiln, substantially as shown anddescribed.

3. The grate n n', made in two separate sections, and provided with theears o o, as de scribed, in combination with the body A,plat.e f,provided with flanges g g, and plate h, as

and for the purposes set forth.

conNELIUs GoDFREY.

